1. 这是什么意思 ? What's the meaning of this? 2.你这是什么意思? What do you mean? 3.你 到底是什么 意思? What on earth do you mean? 4. 我不懂 这个词是什么意思。 I don't understand what the word means. 5. 我不明白 他说的什么意思。 I couldn't make out what he was saying。 6. 我真不知道 他这是什么意思。 I really don't know what he meant by that.